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The game consists of finishing several levels, solving by clicking with the mouse or using the keyboard to complete the tasks.

Classic - by clicking on a square, the others around it change inversely (cross). Do this until all the squares are 0.

Pusher - with the help of the keyboard, press the key indicated on the screen, until the matrix is completely finished.

Counter - Click on the square until it reaches 0, every time you click, it decreases by 1, but be careful, if the number is negative, you lose the game.